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Finding the Fourth Proportional to 5,778.15, 7,973.80 and 3,125.54

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Solution

The fourth proportional to 5,778.15, 7,973.80 and 3,125.54 is: 4,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.15 : 7,973.80 = 3,125.54 : x
  2. Step 2: Convert to fraction form
    5,778.15/7,973.80 = 3,125.54/x
  3. Step 3: Cross multiply
    5,778.15x = 7,973.80 × 3,125.54
  4. Step 4: Simplify right side
    5,778.15x = 24,922,383.17
  5. Step 5: Solve for x
    x = 24,922,383.17/5,778.15
  6. Step 6: Final answer
    x = 4,313.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.